Don't buy it from best buy or FS. Look @ NCIX
http://ncix.com/
They usually have 3-5 laptops on sale every week and I'm sure one of them would be ideal for you. Plus the prices are a lot better then at BB/FS.
Also, and i3 or i5 should be more then sufficient. You can get a really great school
laptop for around 6-700$ easily. Just keep checking the site for what's on sale!